Christmas tree with blades rotated by wind power

ABSTRACT

A Christmas tree includes a Christmas tree body. The Christmas tree body has an upright pole and a blade unit that is detachably mounted to the pole to form the Christmas tree. Blades of the blade unit are rotated around the pole by means of natural wind power, thereby improving the fun of the Christmas tree. The structure design is ingenious and reasonable, energy-saving and environmentally friendly, and practical. It is suitable for indoor and outdoor applications. Besides, the assembly is easy, the transportation is convenient, and the cost is low.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present invention relates to a Christmas tree, and more particularlyto a Christmas tree with blades rotated by wind power.

2. Description of the Prior Art

Christmas is an important holiday in Western countries. More and morecountries promote Christmas culture, and Christmas trees are essentialdecorations for Christmas. The traditional Christmas trees are based onlive trees. Using live trees as Christmas trees causes great damage tothe environment. Later, people uses artificial Christmas trees insteadof live trees. However, the artificial Christmas tree is large in sizeand cannot be disassembled, causing trouble in the transportation.Moreover, the Christmas tree cannot be squeezed during transportation,resulting in a high cost of the artificial Christmas tree.

In order to increase the fun of the Christmas tree, the branches of theChristmas tree are made in the form of blades, and lighting ornamentsare provided on the blades. The blades are rotated by a driving devicesuch as a motor. The lighting ornaments are turned on through acontroller. In the process of rotating the Christmas tree, it has abetter visual effect, increasing the enjoyment of the Christmas tree.However, this rotating Christmas tree has a complicated design andconsumes a lot of power. The application is limited, and it is notpractical.

Accordingly, the inventor of the present invention has devoted himselfbased on his many years of practical experiences to solve theseproblems.

SUMMARY OF THE INVENTION

In view of the drawbacks of the prior art, the primary object of thepresent invention is to provide a Christmas tree with blades rotated bywind power. A blade unit is detachably mounted on a pole to form aChristmas tree. Blades of the blade unit are rotated around the pole bymeans of natural wind power, thereby improving the fun of the Christmastree. The structure design is ingenious and reasonable, energy-savingand environmentally friendly, and practical. It is suitable for indoorand outdoor applications. Besides, the assembly is easy, thetransportation is convenient, and the cost is low.

In order to achieve the above object, the present invention adopts thefollowing technical solutions.

A Christmas tree comprises a Christmas tree body. The Christmas treebody has an upright pole and a blade unit that is detachably mounted tothe pole. The blade unit includes a sleeve and a plurality of bladesdisposed on the sleeve. The plurality of blades are spaced and arrangedaround an outer circumference of the sleeve. The sleeve is a hollowstructure. The sleeve is sleeved on the pole and rotatable relative tothe pole. The blades each have a curved surface.

The invention has obvious advantages and beneficial effects comparedwith the prior art, in particular, it can be known from the abovetechnical solutions. The blade unit is detachably mounted on the pole toform a Christmas tree. The blades of the blade unit are rotated aroundthe pole by means of natural wind power, thereby improving the fun ofthe Christmas tree. The structure design is ingenious and reasonable,energy-saving and environmentally friendly, and practical. It issuitable for indoor and outdoor applications. Besides, the assembly iseasy, the transportation is convenient, and the cost is low.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view according to a first embodiment of thepresent invention;

FIG. 2 is an exploded view according to the first embodiment of thepresent invention;

FIG. 3 is a front view according to the first embodiment of the presentinvention;

FIG. 4 is a top view according to the first embodiment of the presentinvention;

FIG. 5 is a schematic view of the blade according to the firstembodiment of the present invention (viewed in the direction A of FIG.4);

FIG. 6 is another schematic view of the blade according to the firstembodiment of the present invention (viewed in the direction B of FIG.4); and

FIG. 7 is a perspective view according to a second embodiment of thepresent invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Embodiments of the present invention will now be described, by way ofexample only, with reference to the accompanying drawings.

Referring to FIG. 1 to FIG. 7, there are shown specific structures oftwo embodiments of the present invention.

A Christmas tree with blades rotated by wind power comprises a Christmastree body. The Christmas tree body has an upright pole 10 and a bladeunit 20 that is detachably mounted to the pole 10.

The blade unit 20 includes a sleeve 21 and a plurality of blades 22disposed on the sleeve 21. The blades 22 are spaced and arranged aroundthe outer circumference of the sleeve 21. The sleeve 21 is a hollowstructure. The sleeve 21 is sleeved on the pole 10 and is rotatablerelative to the pole 10. Each blade 22 has a curved surface. Each blade22 is gradually widened from top to bottom, so that the outer contour ofthe blade unit 20 is gradually enlarged from top to bottom.

The blade unit 20 is detachably mounted to the pole 10 to form aChristmas tree. The blades 22 of the blade unit 20 are rotated aroundthe pole 10 by means of natural wind power, thereby improving the fun ofthe Christmas tree. The structure design is ingenious and reasonable,energy-saving and environmentally friendly, and practical. It issuitable for indoor and outdoor applications. Besides, the assembly iseasy, the transportation is convenient, and the cost is low.

The pole 10 is provided with two or more blade units 20. The blade units20 are vertically spaced from each other and arranged on the pole 10.The upper and lower adjacent blade units 20 rotate in the samedirection, or the upper and lower adjacent blade units 20 rotate inclockwise and counterclockwise directions, respectively. In general, aspacer is provided between the adjacent blade units 20 (not shown).Before installing the adjacent blade unit 20, a spacer is first sleevedon the sleeve 21, and the spacer is fixed relative to the sleeve 21. Ofcourse, the spacer is detachably mounted on the sleeve 21. Thus, theadjacent blade units 20 are spaced apart from each. Preferably, the pole10 is provided with three blade units 20.

As shown in FIG. 2, FIG. 5 and FIG. 6, each blade 22 has a bentpositioning bar and a blade body 221 connected to the bent positioningbar. Each blade body 221 has the curved surface. The bent positioningbar has an upper horizontal bar 222, a lower horizontal bar 223, and anoblique bar 224. The oblique bar 224 is connected to the outer ends ofthe upper horizontal bar 222 and the lower horizontal bar 223. The bladebody 221 is connected to any one, two or all of the upper horizontal bar222, the lower horizontal bar 223, and the oblique bar 224. The innerends of the upper horizontal bar 222 and the lower horizontal bar 223are connected to the sleeve 21.

Preferably, the bent positioning bar adopts a metal wire, and the bladebody 221 is a curved thin metal sheet corresponding in shape to the bentpositioning bar. During the production, the metal wire is bent into thepredetermined shape, and the curved thin metal sheet is formed into thepredetermined shape, and then the curved thin metal sheet is welded tothe metal wire. In the first embodiment, the three sides of the curvedthin metal sheet are welded to the upper horizontal bar 222, the lowerhorizontal bar 223 and the oblique bar 224, respectively. The structuralstability and the overall structural strength are better. In this way,through the structural design of the blades 22, the assembled connectionof the blades 22 on the sleeve 21 is simple and easy. The productionefficiency and the production yield are improved. The blades 22 havegood structural strength, are not easily damaged, and have gooddurability. In particular, the unique design of the blades 22 ensuresthat the blades 22 have the advantages of being lightweight and beingblown by little wind.

The upper and lower ends of the sleeve 21 are connected with an upperpositioning ring 23 and a lower positioning ring 24, respectively. Theupper positioning ring 23 and the lower positioning ring 24 surround thesleeve 21. The inner end of the upper horizontal bar 222 is connected tothe upper positioning ring 23, and the inner end of the lower horizontalbar 223 is connected to the lower positioning ring 24.

The inner ends of some of the upper horizontal bars 222 of the blades 22are extended until they are connected to the sleeve 21, and the innerends of some of the lower horizontal bars 223 of the blades 22 areextended until they are connected to the sleeve 21 to form theconnection between the upper positioning ring 23, the lower positioningring 24 and the sleeve 21. Preferably, the upper horizontal bar 222 andthe lower horizontal bar 223 are respectively welded to the upperpositioning ring 23 and the lower positioning ring 21 as well as thesleeve 21. In the first embodiment, for every two adjacent blades 22,the upper horizontal bar 222 and the lower horizontal bar 223 of oneblade 22 are connected to the upper positioning ring 23 and the lowerpositioning ring 24, and the inner ends of the upper horizontal bar 222and the lower horizontal bar 223 of the other blade 22 are extended andconnected to the sleeve 21.

Preferably, the sleeve 21 includes a sleeve body 211, an upper connector212 and a lower connector 213. The upper connector 212 and the lowerconnector 213 are detachably connected to the upper and lower ends ofthe sleeve body 211, respectively. The upper positioning ring 23 isconnected to the upper connector 212, and the lower positioning ring 24is connected to the lower connector 213.

FIG. 4 is a top view of the present invention. For the same blade 22,the outer end of the lower horizontal bar 223 extends outwardly beyondthe outer end of the upper horizontal bar 222. The oblique bar 224 iscurved. All the oblique bars 224 of the same blade unit 20 are curved inthe same circumferential direction.

The top end of the pole 10 is provided with a decorative member 11. Thedecorative member 11 is located above the blade unit 20. The decorativemember 11 is detachably mounted to the top end of the pole 10. Alighting member is provided on the blades. The lighting member furtherincreases the dynamic and visual effect of the Christmas tree whenrotated, and the usability is good.

The pole 10 is detachably connected to a base 12. The base 12 is locatedat the bottom end of the pole 10. The lower end of the base 12 isprovided with legs 121 for easy placement or pegs 122 for facilitatinginsertion and positioning.

As shown in FIG. 1, FIG. 2 and FIG. 3, in the first embodiment, thelower end of the base 12 is provided with legs 121 for easy placement,which is suitable for indoor placement. The number of the legs 121 isfour. The four legs 121 are disposed corresponding to the four cornersof the pole 10.

As shown in FIG. 7, in the second embodiment, the lower end of the base12 is provided with pegs 22 for facilitating insertion and positioning,which is suitable for outdoor placement. The number of the pegs 122 isthree. The three pegs 122 are arranged in a triangular shape andconnected to the base 12. The bottom ends of the pegs 122 are graduallytapered from top to bottom.

When assembled, the pole 10 is placed vertically, and the blade unit 20is sleeved on the pole 10 through the sleeve 21 from the top. Beforeinstalling another adjacent blade unit 20, a spacer is first sleeved onthe sleeve 21. The spacer is fixed relative to the sleeve 21 so as tokeep a spacing between the two adjacent blade units 20. After the bladeunits 20 are installed, the corresponding base 12 is assembled to thepole 10 to form a Christmas tree to be placed indoors or outdoorsaccording to the user's need. Then, the Christmas tree is placed in adesired position Finally, the decorative member 11 and the lightingmember are placed on the Christmas tree, respectively.

Although particular embodiments of the present invention have beendescribed in detail for purposes of illustration, various modificationsand enhancements may be made without departing from the spirit and scopeof the present invention. Accordingly, the present invention is not tobe limited except as by the appended claims

What is claimed is:
 1. A Christmas tree, comprising a Christmas treebody; the Christmas tree body having an upright pole and a blade unitthat is detachably mounted to the pole; the blade unit including asleeve and a plurality of blades disposed on the sleeve, the pluralityof blades being spaced and arranged around an outer circumference of thesleeve, the sleeve being a hollow structure, the sleeve being sleeved onthe pole and rotatable relative to the pole; the plurality of bladeseach having a curved surface.
 2. The Christmas tree as claimed in claim1, wherein each of the blades is gradually widened from top to bottom sothat an outer contour of the blade unit is gradually enlarged from topto bottom.
 3. The Christmas tree as claimed in claim 2, wherein theblade unit includes at least two blade units that are vertically spacedfrom each other and arranged on the pole; the upper and lower adjacentblade units rotate in a same direction, or the upper and lower adjacentblade units rotate in clockwise and counterclockwise directions,respectively.
 4. The Christmas tree as claimed in claim 1, wherein eachof the blades has a bent positioning bar and a blade body connected tothe bent positioning bar; the blade body has the curved surface; thebent positioning bar has an upper horizontal bar, a lower horizontal barand a oblique bar, the oblique bar is connected to outer ends of theupper horizontal bar and the lower horizontal bar; the blade body isconnected to any one, two or all of the upper horizontal bar, the lowerhorizontal bar and the oblique bar; and inner ends of the upperhorizontal bar and the lower horizontal bar are connected to the sleeve.5. The Christmas tree as claimed in claim 4, wherein upper and lowerends of the sleeve are connected with an upper positioning ring and alower positioning ring respectively, the upper positioning ring and thelower positioning ring surround the sleeve; the inner end of the upperhorizontal bar is connected to the upper positioning ring, and the innerend of the lower horizontal bar is connected to the lower positioningring.
 6. The Christmas tree as claimed in claim 4, wherein the outer endof the lower horizontal bar extends outwardly beyond the outer end ofthe upper horizontal bar, the oblique bar is curved, all the obliquebars of the blades of the blade unit are curved in a samecircumferential direction.
 7. The Christmas tree as claimed in claim 1,wherein a top end of the pole is provided with a decorative member, thedecorative member is located above the blade unit, and the decorativemember is detachably mounted to the top end of the pole.
 8. TheChristmas tree as claimed in claim 5, wherein the sleeve includes asleeve body, an upper connector and a lower connector, the upperconnector and the lower connector are detachably connected to upper andlower ends of the sleeve body, respectively; the upper positioning ringis connected to the upper connector, and the lower positioning ring isconnected to the lower connector.
 9. The Christmas tree as claimed inclaim 1, wherein the pole is detachably connected to a base, and thebase located at a bottom end of the pole.
 10. The Christmas tree asclaimed in claim 1, wherein a lighting member is provided on the blades.